One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,8,4,6)(9,10,12,14)(11,15,16,13)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,18,23,26)(19,27,25,32)(20,24,22,31)(21,28,30,29)(10,14)(13,15)(17,19,23,25)(18,21,26,30)(20,29,22,28)(24,32,31,27)(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,20,23,22)(18,24,26,31)(19,28,25,29)(21,27,30,32)(1,4,5,3)(2,6,7,8)(11,16)(13,15)(17,21)(18,25)(19,26)(20,27)(22,32)(23,30)(24,29)(28,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.